diff --git a/en/device-dev/driver/driver-peripherals.md b/en/device-dev/driver/driver-peripherals.md
index 02e7a9e357a6eb7484f8a0eea5a486c3a90b396a..2269b5f9dde2fbe881a7047b0f08d09ad7304be0 100644
--- a/en/device-dev/driver/driver-peripherals.md
+++ b/en/device-dev/driver/driver-peripherals.md
@@ -1,4 +1,4 @@
-# Peripherals<a name="EN-US_TOPIC_0000001157319411"></a>
+# Peripheral Driver Development<a name="EN-US_TOPIC_0000001157319411"></a>
 
 -   **[LCD](driver-peripherals-lcd-des.md)**  
 
diff --git a/en/device-dev/driver/driver-platform-watchdog-des.md b/en/device-dev/driver/driver-platform-watchdog-des.md
index ddaddc1abe08efca457b46b26db353dc0df06f2e..6b907fcdf0dd75eb047d74a045d79a4ab16e00ce 100644
--- a/en/device-dev/driver/driver-platform-watchdog-des.md
+++ b/en/device-dev/driver/driver-platform-watchdog-des.md
@@ -104,7 +104,7 @@ A watchdog, also called a watchdog timer, is a hardware timing device. If an err
 
 Use  **WatchdogOpen**  to open a watchdog. A system may have multiple watchdogs. You can open the specified watchdog by using the ID.
 
-int32\_t WatchdogOpen\(int16\_t wdtId\); 
+DevHandle WatchdogOpen\(int16\_t wdtId\);
 
 **Table  2**  Description of WatchdogOpen
 
@@ -201,7 +201,7 @@ if (ret != 0) {
 
 ### Setting the Timeout Duration<a name="section182386137111"></a>
 
-int32\_t WatchdogSetTimeout\(PalHandle \*handle, uint32\_t seconds\); 
+int32\_t WatchdogSetTimeout\(DevHandle \*handle, uint32\_t seconds\); 
 
 **Table  4**  Description of WatchdogSetTimeout
 
@@ -253,7 +253,7 @@ if (ret != 0) {
 
 ### Obtaining the Timeout Duration<a name="section1883310371114"></a>
 
-int32\_t WatchdogGetTimeout\(PalHandle \*handle, uint32\_t \*seconds\); 
+int32\_t WatchdogGetTimeout\(DevHandle \*handle, uint32\_t \*seconds\);
 
 **Table  5**  Description of WatchdogGetTimeout
 
diff --git a/en/device-dev/kernel/kernel-mini-appx-lib-posix.md b/en/device-dev/kernel/kernel-mini-appx-lib-posix.md
index ebed9d85d51bb803ee54a998d7e944afd9621f5b..e5cc7ba886d7cd3f8bf895521bff5ec8bdf689c7 100644
--- a/en/device-dev/kernel/kernel-mini-appx-lib-posix.md
+++ b/en/device-dev/kernel/kernel-mini-appx-lib-posix.md
@@ -250,7 +250,8 @@ The OpenHarmony kernel uses the  **musl libc**  library and self-developed APIs
 <td class="cellrowborder" valign="top" headers="mcps1.2.5.1.3 "><p id="p5747174219504"><a name="p5747174219504"></a><a name="p5747174219504"></a>Deletes a file.</p>
 </td>
 </tr>
-<tr id="row117941848155011"><td class="cellrowborder" valign="top" headers="mcps1.2.5.1.1 "><p id="p157951148105019"><a name="p157951148105019"></a><a name="p157951148105019"></a>#include &lt;fcntl.h</p>
+<tr id="row117941848155011"><td class="cellrowborder" valign="top" headers="mcps1.2.5.1.1 "><p id="p157951148105019"><a
+name="p157951148105019"></a><a name="p157951148105019"></a>#include &lt;fcntl.h&gt;</p>
 </td>
 <td class="cellrowborder" valign="top" headers="mcps1.2.5.1.2 "><p id="p1086884114190"><a name="p1086884114190"></a><a name="p1086884114190"></a>int open(const char *path, int oflags, ...);</p>
 </td>
diff --git a/en/device-dev/subsystems/oem_subsys_toolchain_hdc_guide.md b/en/device-dev/subsystems/oem_subsys_toolchain_hdc_guide.md
index 8116d317a2f56abdd4fcd5304d2c5076fd5fdf6b..8cb18fe497bdb4d236cc15470edf1eec03457aee 100644
--- a/en/device-dev/subsystems/oem_subsys_toolchain_hdc_guide.md
+++ b/en/device-dev/subsystems/oem_subsys_toolchain_hdc_guide.md
@@ -45,7 +45,7 @@ This section describes how to set up the hdc\_std environment and use its common
 
 **Obtaining hdc\_std:**
 
-Obtain hdc\_std from the  **developtools\_hdc\_standard**  repository in the  **prebuilt**  directory.
+Obtain **hdc\_std** from the **prebuilt** directory at [developtools\_hdc\_standard](https://gitee.com/openharmony/developtools_hdc_standard).
 
 **Example:**
 
@@ -702,5 +702,3 @@ hdc\_std shell
 -   **Solutions**
 
     **hdc\_std.exe**  requires no installation. It can be directly used on a disk or added to environment variables. Open the cmd window and run the  **hdc\_std**  command to use  **hdc\_std.exe**.
-
-